Black spot on my porcelain crown

Are you concerned about a black spot on your porcelain crown? You’re not alone. Many people notice discoloration or dark spots on their dental crowns and wonder what could be causing it. In this comprehensive guide, we will delve into the possible reasons behind the black spot on your porcelain crown and discuss how to address the issue effectively.

Introduction to Porcelain Crowns

A porcelain crown is a dental restoration that is placed over a damaged or weakened tooth to restore its functionality and appearance. These crowns are known for their durability, natural look, and ability to match the color of your surrounding teeth. However, in some cases, patients may notice a black spot on their porcelain crown, which can be concerning.

Common Causes of Black Spots on Porcelain Crowns

There are several factors that can contribute to the appearance of a black spot on your porcelain crown. Let’s explore some of the most common causes:

Bacterial Infiltration

One of the primary reasons for a black spot on a porcelain crown is bacterial infiltration. Bacteria can find their way into the crown, leading to discoloration and potential complications.

Inadequate Seal

An inadequate seal between the porcelain crown and the underlying tooth structure can also result in a black spot. This can occur due to poor bonding or an ill-fitting crown.

Stain from Previous Fillings

Sometimes, the black spot on your crown may be a result of stains from previous fillings in the restored tooth. These stains can become visible over time and give the appearance of a dark spot under the crown.

Systemic Diseases and Medications

In rare cases, systemic diseases or certain medications can cause tooth discoloration, including the appearance of a black spot under a crown. If you suspect this may be the case, it is important to consult with your dentist to determine the underlying cause.

Remedies for Discolored Dental Crowns

If you notice a black spot on your porcelain crown, it is crucial to address the issue promptly. Here are some remedies that can help restore the color and appearance of your crown:

Professional Whitening

A discolored dental crown can be effectively whitened through a professional dental procedure. Your dentist will assess the cause of the discoloration and recommend the appropriate whitening treatment specifically designed for dental crowns. It is important to note that over-the-counter whitening products, such as strips, may not be suitable for crowns and can potentially damage them.

Proper Oral Hygiene

Maintaining proper oral hygiene is essential in preventing and minimizing stains on your dental crown. Brush your teeth twice a day using a soft-bristled toothbrush and fluoride toothpaste. Additionally, flossing between the crowns after every meal can help remove food particles and prevent plaque buildup.

Avoid Sticky Foods

To minimize the risk of stains and deterioration of your dental crown, it is advisable to limit your consumption of sticky foods. These foods can adhere to the crown’s surface and contribute to discoloration. After eating sticky foods, make sure to brush and floss thoroughly to reduce the chances of staining.

Regular Dental Check-ups

Regular visits to your dentist are crucial in maintaining the longevity and appearance of your dental crown. Your dentist will monitor the condition of your crown, provide professional cleanings, and address any concerns you may have.

When to Seek Professional Help

While some discoloration on dental crowns may be harmless, certain signs warrant immediate attention from your dentist. If you experience any of the following, it is advisable to seek professional help:

  • Severe pain or discomfort associated with the black spot
  • Rapid discoloration or changes in the appearance of the crown
  • Unpleasant odor or taste coming from the crown area
  • Loose or ill-fitting crown

Picasso Dental Clinic: Your Trusted Dental Partner

At Picasso Dental Clinic, we understand the concerns you may have regarding your dental crown. With our team of experienced professionals and state-of-the-art facilities, we are committed to providing you with the highest quality dental care. Our extensive range of dental services, from routine check-ups to complex procedures like braces and implants, ensures that all your dental needs are met under one roof.

Since 2013, we have served over 57,000 overseas patients from 62 different nationalities. Our personalized approach and inclusive communication style have earned us a reputation as one of the best dental clinics in Vietnam.


A black spot on your porcelain crown can be concerning, but it is important to remember that there are remedies available to restore its color and appearance. By addressing the underlying cause and maintaining proper oral hygiene, you can ensure the longevity and beauty of your dental crown. If you have any concerns or questions, do not hesitate to reach out to your trusted dental professional.